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From: karl@MCS.COM (Karl Denninger)
Newsgroups: comp.os.linux.misc,comp.os.linux.development,comp.os.386bsd.development,comp.os.386bsd.questions,comp.sys.ibm.pc.hardware.systems,comp.sys.ibm.pc.hardware.storage,comp.sys.ibm.pc.hardware.misc,comp.periphs.scsi
Subject: Re: BusLogi 445S and DMA Channel (NEW ANSWER)
Date: 26 May 1994 22:15:49 -0500
Organization: MCSNet Ops, Chicago, IL
Lines: 31
Message-ID: <2s3ol5$bat@Mercury.mcs.com>
References: <2rnjgs$g1l@news-rocq.inria.fr> <2s2j80$1go@ebh.eb.ele.tue.nl> <JKH.94May27001218@nx.ilo.dec.com> <michaelv.770005578@ponderous.cc.iastate.edu>
NNTP-Posting-Host: mercury.mcs.com

In article <michaelv.770005578@ponderous.cc.iastate.edu>,
Michael L. VanLoon <michaelv@iastate.edu> wrote:
>In <JKH.94May27001218@nx.ilo.dec.com> jkh@nx.ilo.dec.com (Jordan Hubbard) writes:
>>Whether or not the 3.37
>>eprom fixes the >16MB DMA problem is, however, still an open question
>>for ANY of the operating systems.  Buslogic claims success with 3.37,
>>yet I've now seen more than a few reports that tend to indicate that
>>they did NOT fix the problem.
>
>I've also heard that the fault is not with the SCSI controller, but
>with the VLB circuitry.  Some VLB slots do bus-mastering rather quite
>poorly.  Maybe it's your motherboard that's causing you so much pain.
>Have you tried moving it to a different slot?  It may be that you have
>one master slot and all the rest are slaves (or maybe no true
>mastering slot at all... ack :-P ).

I run a 445S with BSDI and the beta driver from them, and it is a SMOKING
fast board.  Really nice, it works, and I haven't seen ANY problems with it
whatsoever.  Other than crappy cables (which will screw you immediately as
the board is a SCSI-II FAST implementation) and disks which died on their 
own (unrelated to the adapter).

Highly recommended.  I love mine, and will buy more.  My primary news
server here runs one.  No complaints.

--
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